**Q1: **

Given that , find the value of the missing denominator in the equation .

**Q5: **

Two values are in the ratio . If I add a certain number to each value, the ratio changes to . What is that number?

**Q6: **

Find the third proportional to 3, 33, and 11.

**Q7: **

Determine the fourth proportional of the numbers 8, 36, and 46.

**Q8: **

Given that 19, 8, , are proportional, what is the value of ?

- A19
- B1.68
- C32
- D2

**Q9: **

Find an expression for the fourth proportional of the quantities , , and .

- A
- B
- C
- D
- E

**Q12: **

If , , , and are proportional quantities, then is called .

- Athe first proportional
- Bthe second proportional
- Cthe fourth proportional
- Dthe third proportional

**Q13: **

Find the value of that makes the numbers , , 4.8, and 3.8 proportional.

**Q14: **

Complete the following quantities with the third proportional: , , , .

- A
- B
- C
- D

**Q15: **

Find an expression for the fourth proportional of the quantities , , and .

- A
- B
- C
- D
- E